Surface displacements due to elastic wave scattering by buried planar and non-planar cracks |
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| Authors: | AH Shah KC Wong SK Datta |
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| Institution: | Department of Civil Engineering, University of Manitoba, Winnipeg, Canada R3T 242;Department of Mechanical Engineering and Co-operative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO 80309, U.S.A. |
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| Abstract: | The scattering of time-harmonic plane longitudinal, shear, and Rayleigh waves by a crack in two dimensions embedded in a semi-infinite homogeneous isotropic elastic half-space has been studied in this paper. Two problems have been considered: a straight crack and a Y-shaped crack. A hybrid numerical technique combining a multipolar representation of the scattered field in the half-space with the finite element method has been used to obtain the far-field displacements as well as the stress-intensity factors for the crack tips. Results for vertical displacement on the free surface of the half-space are presented in this paper. |
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